(3Z,5S,6S,7R,8R,9S,11Z,13S,14S,15S,16Z)-8,14-bis((tert-butyldimethylsilyl)oxy)-17-((4S,6S)-6-((R,E)-4-iodobut-3-en-2-yl)-2,2-dimethyl-1,3-dioxan-4-yl)-5,7,9,11,13,15-hexamethylheptadeca-1,3,11,16-tetraen-6-ol

(R,2Z,4E)-6-((4S,6S)-6-((1Z,3S,4S,5S,6Z,9S,10R,11R,12S,13S,14Z)-4,10-bis((tert-butyldimethylsilyl)oxy)-12-hydroxy-3,5,7,9,11,13-hexamethylheptadeca-1,6,14,16-tetraen-1-yl)-2,2-dimethyl-1,3-dioxan-4-yl)hepta-2,4-dienoic acid